ПРЕЗЕНТАЦИЯ_С# / си / ИСПОЛЬЗОВАНИЕ_БИБЛИОТЕКИ_СБОРКИ

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace m1

{

public class B1

{

public static double summa(double a, double b)

{

double c = a + b;

return c;

}

public static double umn(double a, double b)

{

double u = a * b;

return u;

}

}

}

----------------------------------------------------

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using m1; //

namespace WindowsFormsApplication1

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

}

private void Form1_Load(object sender, EventArgs e)

{

}

private void button1_Click(object sender, EventArgs e)

{

double t = Convert.ToDouble(textBox1.Text);

double z = Convert.ToDouble(textBox2.Text);

double c = B1.summa(t, z); //

textBox3.Text = Convert.ToString(c);

}

private void button2_Click(object sender, EventArgs e)

{

double tt = Convert.ToDouble(textBox1.Text);

double zz = Convert.ToDouble(textBox2.Text);

double u = B1.umn(tt, zz); //

textBox3.Text = Convert.ToString(u);

}

private void button3_Click(object sender, EventArgs e)

{

//Application.Exit();

Close();

}

}

}